Ending their 15-year relationship in December, ex-journalist Dominic has already been on dates with other women – devastating news for Susanna, 43.

The Strictly Come Dancing beauty was left “shocked and shaking” last month when she discovered Dominic, 46, was looking for a new love on the online dating site Match.com.

Not giving up without a fight, the star is trying to convince the dad of her three sons to go back to relationship counselling, which they have tried before.

A source said: “Susanna has been asking Dominic to get back together. They had counselling before the split and she wants them to go back and have more because she says they didn’t give it a chance to work.”

But Dominic is refusing to consider reconciliation, telling mates he is tired of feeling ignored and undervalued.

“Dominic is not interested,” the source added. “He is in a routine with the boys and has apparently been out on two dates. He says his mind is made up.

“Susanna is saying she could never forgive herself if she didn’t fight to save the relationship. But he says she never wanted to get married and commit in the first place so why would it be any different now.

Dominic stunned Susanna at Christmas, at the height of her Strictly Come Dancing fame, by saying he wanted to break up.

Her gruelling Strictly schedule on top of her three-times-a-week 200-mile commute from home in South London to present BBC Breakfast in Salford is said to have caused irreversible damage to a life she cherished with Dom.

While Susanna was enjoying her celebrity, Dominic, a youth charity communications director, was at home in Lambeth with their three young boys.

And friends said he hated how Susanna would cancel plans with him at the drop of a hat in favour of work commitments. He also felt humiliated by her flirty interview style, highlighted in a video with Arctic Monkeys frontman Alex Turner which went viral.

But convinced they would pull through, Susanna posted a picture of a battered Love Hearts sweet on Twitter on Valentine’s Day.

It was a cryptic message to Dom, ­begging him not to throw their love away. But he didn’t want to know.

Opening up about their split at the TRIC awards, where Susanna won Newsreader of the Year, she said: “I’m still talking to Dom. He is one of my best friends in the world. It has been tough but we are sorting it out. He is a great dad to the kids.”

Friends of Susanna – voted 96th on FHM’s 100 sexiest women’ list – say she always had her ­family’s best interests at heart.

Determined to create a financially s­table life for them all – something she didn’t have – Susanna threw herself into multiple TV projects, they said.

But, despite a £1million deal to front ITV’s new morning show, Good Morning Britain, friends say Susanna is devastated about the split.

Especially as the new job would allow her to live at home with no commute.

One friend said: “She’s really low. Her career has never been better but it’s all fallen apart in her personal life.”